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besir660's Avatar
Join Date: Oct 2014
Posts: 5
1977 bosch k-jetronic fuel distributor question

Hi All,
I need some help as below. I am quite new, and I have a 03/1977 911 2.7 CIS car.
chassis no:9117301905
engine no: 6372788

the fuel distributor started leaking and the mechanic told me it is leaking from the middle section where two parts are joined (which is pretty bad as I understand from the forum). Also the guy says my part is not original and he has a another one from a donor car. Both parts are to be sent to a specialist (still under dealers guarantee, phew..) to be refurbished. the guy suggests his part to be fitted to my car after refurbishment. I am a bit confused so I wanted to share with you guys for guidance:

The part that came out from my car has following numbers on it (as can be seen in the pictures):
Bosch part no:
0 438 100 006
also: EP/LKM 6/6 and another number which i didnt note but seen in the picture although a bit blurry 720493
at the top of the unit: 021-8

The part the mechanic has:
Bosch #: 0 438 100 006 (no EP/LKM i dont know what that means)
top of the unit: 061-7

The main difference in appearance between the parts is the ports. In my part there are three ports one of which is blocked (i suspect the connection to cold start valve, I have to check when i am next to the car, but it probably doesn't work as the car runs rough in the first 30sec of cold start) and someone in the past probably just blocked this exit on the distributor.

In the mechanic's part it looks as if there are 3 ports also , but one is a closed thing.

When I check here, looks like he is right.

Porsche Parts-Special T,Porsche CIS fuel injection parts, fuel distributors, warm up regulators-

but I am a bit weary of changing anything as I know this car was running properly before the leakage (ignoring the initial rpm oscillation for 30 secs and a bit rough untill warm). Another situation is that the specialists had already fixed the part that came out of my car, but my mechanic wants to wait for the other part rather than fitting this (I have already been waiting 3 weeks, so I was a bit frustrated, and makes me think the part on the car is somehow more precious than what he has)

What do you think? I would appreciate your help. Pictures are attached:

Old 11-23-2014, 01:06 AM
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